That's what I meant: retrofitting the parts, not a build sheet "package."
I came across several posts on M3Forum when I was trying to order an Imola/black Bicolor steering wheel for my E39. Members were able to pull part umbers off RealOEM for the Individual Equipment and order them at the dealer to retrofit.
'02 ///M5 Imola Red / Imola Red '09 335i Alpine White / Coral Red
'04 E55 AMG Brilliant Silver / Anthracite
'96 318i Alpine White / Black
'01 330Ci Titanium Silver / Coral Red
'96 328i Jet Black / Black